Weather in Santa Rosa in January
Santa Rosa, United States averages a high of 14.6°C (58.3°F) and low of 4.7°C (40.5°F) in January, with 10 rain days and 6.7 hours of daily sunshine. Travel score: 59.3/100 (Mixed). The best time to visit Santa Rosa is July.
High
15°C58°F
Low
5°C40°F
🌧️
10
rain days
☀️
6.7
hrs/day sunshine
💧
81%
humidity
59— Mixed
January in Santa Rosa is cool and occasionally wet — mixed conditions — plan indoor alternatives.
What are the average temperatures in Santa Rosa?
How much does it rain in Santa Rosa in January?
Santa Rosa receives an average of 146.1mm of rainfall across 10 rainy days in January. The annual total is 736.1mm.
What should I pack for Santa Rosa in January?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
🧥
Warm coat
Cool weather with highs around 15°C
🧶
Sweaters and warm layers
Layer up for comfort
🧤
Warm gloves
Cold nights around 5°C
🧣
Warm scarf
Protect against cold winds
🎉Visiting United States in January?
Don't miss any public holidays — check before you book!
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Data based on 1994–2024 averages · Last updated: 2024-12-31